Fixture switch



Oct. 24,1933.

l C. M. PETERSEN FIXTURE SWITCH Filed May 18, 1932 Illllllllll IIIII'A 'Patented oei. 24, 1933 Pixma swrrcn cui n. reuma' man, N. 1.,) mmf u Circle F Mfg. Gc., Trenton, N. J., a corporation of New Jersey Applicaties my 1s, im. sensitiv. ciales s claim. (ci. zee-es) This invention relates to switches and more particularly to a novel switch mechanism adapted for use as a canopy switch although having general application to -other electrical fixtures such 5 as table lamps or .the like.

One of the objects of the invention is to provi a switch construction of maximum simplicity with consequent economy of manufacture, thereby meeting the requirements of installations which 1o demand a safe, reliable and yet inexpensive switch construction.

A further object of the invention is to provide a construction embodying only two maior parts. namely, a base and a cap which are telescopically related in such a way that the manipulation of the cap serves to operate the switch, thus'greatly simplifying the construction from the standpoint of manufacture, as well as its manipulation in practical use and eliminating parts which are likely to easily get out of order.

With the above and other objects in yview which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement.of parts hereinafter more fully described,

illustrated and claimed.

A preferred and practical embodiment of the invention is shown in the accompanying draw- Figure l is a vertical sectional view of the improved switch construction.

Figure 2 is a horizontal 'cross sectional view taken on the line 2-2 of Figure l.

Figure 3 is a bottom plan view ofthe cover carrying the switch contacts. A

Figure 4 is a detail view illustrating one form of application of the invention.

Figureisaviewillustratingthevariousparts separated prior to assembly.

Figure sise Perspective view ofone ofthe terminal contacts. Y

Similar reference characters designate corresponding .parts throughout the several ngures of the drawing.

Referring tothe drawing, it will be observed that the invention includes in its organization. a base designated generally as A and a cap B telescopically related tothe base'to form a switch' chamber. The cap B is operatively connected to o the base A for rotatable movement by a suitable fastening C.

ThebaseAisprovidedwithashankorstem portion A' for receiving the wires W and also carryins a support engaging member designated gen- 5 erallyasD..

The said base is provided atl one side with an upstanding boss 1 formed with sockets or recesses 2 for receiving wire terminal contacts 3, and is also provided with the wire threading openings 3a. The contacts 3 are preferably of spring metal 0f and have their free ends disposed toward the periphery of the base while their inner ends are looped or formed with an eye portion i for embracing the ends 5 ofthe wires W which are of the usual insulation covered type except for the g5 portion thereof which is held within the loop or eye 4. These wires are led through the openings 3a which co unicate with the grooves or channels 6 form inthe stem or shank A, and, as shown in Figure '1, the insulation thereof is eom- "y pressed by the support engaging member D so as to. hold the wires in place.

The cap or cover B is preferably recessed at one side to provide a flange or skirt portion 'I which telescopes over the boss l and a portion of the base itself thereby completely to house the switch mechanism. The interior of the cap or cover may be provided with a boss 8 thereby conveniently to center a metallic bridging conductor member 9 having a central opening to ilt 30 over the boss and provided at its outer ends with the switch contacts 10--10. The inside face of the flange 'l of the cover is formed with a plu, rality of ratchet faces ll-ll and l2l2, the former being covered by the switch contacts 35 10-10 and the latter providing insulating faces which receive thev terminal contacts 3 when the circuit is broken. With the arrangement described it will be apparent that the cap or cover B not only constitutes the operator or actuator of the switch mechanism, but also, the ratchet faces ll and l2 and the intervening shoulder portions, provide the required quick make and break of the electrical circuit as' the cover is moved or propelled intermittently.

As'willbeoheervedfromriguresl and3,the

metallic conductor member 9 of the cover is eifectivelrprotected from'the wire terminals 3 

